Question about 2002 GMC Yukon XL

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How do I remove the front hub/wheel assembly? Hi there; I am attempting to replace the wheel bearing/ABS sensor assy on the front left of my 2002 GMC Yukon XL 1500 (*4-Wheel Drive*). So far, I have removed the caliper, rotor, brake line/ABS line retainer bracket, axle nut, upper control arm, and all three bolts on the back of the hub/wheel assembly. How do I get the hub/wheel assy itself off? It's acting like it's rust-welded in place. I tried a slide hammer, but it isn't budging. Am I missing something? I don't see any washers or cotter pins...I thought there would be a thrust washer behind the axle nut, but I don't see one...it feels like it is really locked-on there. Thanks in advance! Dave

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They are fitted very securely into the axle. It will come out as it is just splined onto the output shaft. The secret is equal pressure to the rear of the hub. Because of the close tolerances, it cant just be pulled from one spot on the hub as that jams the opposite side. Tap around the rear of the hub with a hammer in a circular pattern or use a 3 jaw puller to exert equal pressure.

Posted on Mar 24, 2011

Testimonial: "Thank you fireghost239! The hub puller that locks onto the hubs with hub nuts didn't work...the 3-jaw puller you recommended did the trick! Thanks!!"

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Go to this site, it is for a 99 jimmy but the procedure is the same. www.handymanlyness.com/archiv...99 jimmy.html this will show you the basics. have a good day !!

Posted on Mar 24, 2011

Testimonial: "Toolman18620--that's a beautiful website and EXTREMELY helpful--thank you!"

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Abs light comes on


Have codes checked, most common is a failed left or right wheel speed sensor , part of front wheel hub/bearing assembly.

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Replace Front Wheel Hub Bearing 2002 Jeep Grand Cherokee 2 wheel drive


Removal
  1. Raise and support the vehicle.
  2. Remove the wheel and tire assembly.
  3. Remove the brake caliper, caliper anchor, rotor and ABS wheel speed sensor.
  4. Remove the cotter pin, nut retainer and axle hub nut.
  5. Remove the hub/bearing mounting bolts from the back of the steering knuckle. Remove hub/bearing from the steering knuckle and off the axle shaft.
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  1. Install the hub/bearing to the knuckle.
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Unwanted abs activation only for the first 3 to 5 or so stops on a 2002 tahoe


That is know as overactive abs.

What happens is a speed sensor at one of the wheels is dropping out at low speed. The abs interprets this as the wheel locking up, even though it is not, and activates to unlock the wheel.

there are a couple of things that can cause this.

1. Excessive play in a front wheel bearing. With the tire off the ground grab it at the 12 and 6 o'clock positions and push/pull. If you feel movement you may have just found the problem.

2. there is a TSB that has you check for excessive rust build up where the sensor enters the wheel bearing. To do this you will need to remove the caliper and the rotor. You should see the sensor bolted to the bearing/hub assembly with usually an allen head bolt. Remove the bolt and carefully remove the sensor. If the sensor brakes off you will have to replace the hub/bearing. With the senor removed clean all the rust where the sensor mounts to the hub. Apply some dielectric grease to the area and reinstall the sensor. Do this for both front wheels.

If none of those resolves this than you will need a high end scan tool capable of reading live ABS data. With the speed sensors displayed drive the vehicle under the conditions necessary to duplicate the symptom. See what wheel drops out and then focus on that wheel.

Let me know if you have any questions!

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

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Left front wheel bearing replacement diagram


Removal & Installation Front To Remove:
The front wheel bearings are not serviced separately. If the front wheel bearings are defective, the hub and bearing assembly must be replaced.
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Lubricate the threads on the halfshaft with clean engine oil.
  3. Remove or disconnect the following:
    • Front wheels
    • Halfshaft hub nut
    • Caliper from the steering knuckle WARNING
      DO NOT allow the brake hose to support the weight of the caliper.
    • Brake rotor
    • Anti-lock Brake System (ABS) sensor from the backing plate
    • Hub and bearing assembly from the backing plate
    • Hub and bearing assembly from the halfshaft
    • Hub and bearing assembly
To Install:
Exploded view of the front hub mounting and related components 7922xg36.gif

  1. Install or connect the following:
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    • Hub and bearing assembly to the backing plate. Torque the 3 bolts alternately and evenly to 70 ft. lbs. (95 Nm).
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Oct 18, 2010 | 2001 Oldsmobile Aurora

1 Answer

Replace front hub assembly.


Replacing the front wheel bearing/hubs can be a big job for the inexperianced. Briefly...
Remove tire/wheel
Remove brake caliper assembly, do not remove brake line.
Remove caliper bracket.
Remove brake rotor.
Unplug ABS sensor.
Remove the large axle nut.
Press axle out of bearing (may need special tool)
Remove the 3 bearing bolts and remove bearing.

May 19, 2010 | 2003 Chevrolet Impala

2 Answers

Replace front left wheel berring on 2002 GMC Yukon


do not replace only the bearing. replace hub assembly. remove rim/tire , remove caliper, mounting plate, rotor. . un bolt hub assembly, unplug abs. remove front axle nut if 4x4. you may need to rent the axle nut remove kit and hub puller. pull out hub. drive axle reward out of hub. install new part. do not torque hub over 90lbs. check with parts sell for spec

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2 Answers

ABS Light is on, and TRAC off Light on. MIDAS


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1 Answer

Wheel bearings


it is a bearing and hub assembly, average price is around $200 US
There are 2 designs, the cheaper ones have external ABS sensor, the more expensive has ABS sensor built into the hub assy..
here is a picture of the hub assy w/built in ABS sensor.
642ae2b.jpg

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3 Answers

Buick rendevousz headaches


I own the 2002 Buick Rendezvous CX and I've encountered the same problems listed here. The ABS / Traction Control Lamp stays on and was throwing a code for the left wheel speed sensor as well as an anti-lock brake code (both in the wheel bearing hub assembly). I replaced the left and right front wheel hub assembly yet this did not eliminate the abs codes. 
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I would suggest that you simply remove the left wheel and inspect the wire that leads to the abs sensor (there is only one wire on each wheel). Mine literally fell apart when I removed the plastic housing around the wire. I spliced the wire together and put it back in the plastic housing. After this, my abs codes disappeared and my anti-lock brakes began working again!
This is a simple fix that many people spend $1000 + on by replacing the hub assembly which does not fix the problem.

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